WTT: NIB Hog Zenith(blk) for used Apeks 2nd stage

[Aotus]

Never used this reg. got it to use as a stage/O2 reg and then decided I wanted a 2nd that is different from my primary regs. Ideally, I'd like to trade for an ATX50, but a 40 would be fine, used but not used up.

[Aotus]

Trade pending.